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Feature gate pub(restricted)

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This commit is contained in:
Jeffrey Seyfried 2016-04-10 23:33:36 +00:00
parent 50ce605f46
commit 44c78eeb46
1 changed files with 15 additions and 0 deletions
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15
src/libsyntax/feature_gate.rs
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@ -256,6 +256,9 @@ const KNOWN_FEATURES: &'static [(&'static str, &'static str, Option<u32>, Status
// impl specialization (RFC 1210)
("specialization", "1.7.0", Some(31844), Active),
// pub(restricted) visibilities (RFC 1422)
("pub_restricted", "1.9.0", Some(32409), Active),
];
// (changing above list without updating src/doc/reference.md makes @cmr sad)
@ -608,6 +611,7 @@ pub struct Features {
pub deprecated: bool,
pub question_mark: bool,
pub specialization: bool,
pub pub_restricted: bool,
}
impl Features {
@ -644,6 +648,7 @@ impl Features {
deprecated: false,
question_mark: false,
specialization: false,
pub_restricted: false,
}
}
}
@ -1159,6 +1164,15 @@ impl<'a, 'v> Visitor<'v> for PostExpansionVisitor<'a> {
}
visit::walk_impl_item(self, ii);
}
fn visit_vis(&mut self, vis: &'v ast::Visibility) {
let span = match *vis {
ast::Visibility::Crate(span) => span,
ast::Visibility::Restricted { ref path, .. } => path.span,
_ => return,
};
self.gate_feature("pub_restricted", span, "`pub(restricted)` syntax is experimental");
}
}
fn check_crate_inner<F>(cm: &CodeMap, span_handler: &Handler,
@ -1256,6 +1270,7 @@ fn check_crate_inner<F>(cm: &CodeMap, span_handler: &Handler,
deprecated: cx.has_feature("deprecated"),
question_mark: cx.has_feature("question_mark"),
specialization: cx.has_feature("specialization"),
pub_restricted: cx.has_feature("pub_restricted"),
}
}